Environmentally acceptable inhibitor formulations for metal surfaces

Patent

Description

A composition for inhibiting corrosion of metal surfaces comprises permanganate and a very low concentration of chromium (VI). The concentration of chromium (VI) in the aqueous solution is less than about 100 micrograms per liter, and the concentration of permanganate is about 0.2% to about 20% by weight of the aqueous solution. In another embodiment of the invention, a composition for inhibiting corrosion of metal surfaces includes permanganate and acetic acid. The concentration of acetic acid in the aqueous solution is between about 0.2% and 2.0% by volume. The concentration of permanganate is about 0.2% to about 20% by weight of the aqueous solution. Other embodiments of the invention include methods of using the present sealant compositions and the resulting corrosion inhibited metal substrates. In yet another embodiment of the present invention there is provided a kit for preparing corrosion inhibiting solutions for metal treatment.

Attributes

Attribute NameValues
Title
  • Environmentally acceptable inhibitor formulations for metal surfaces

Patent Number
  • US 6183547 B2

USPTO Link
Inventor
  • Albert E. Miller

  • Gautam Banerjee

Inventor From Local Institution
  • Albert E. Miller

Other Application
  • 09/263,712

Claims
  • 27

Classification (US Patent)
  • 106/14.21; 106/14.14; 106/14.44; 148/243; 148/264; 252/387; 252/389.53; 427/372.2; 427/383.7; 428/457; 428/469; 428/472;

Cooperative Patent Classification codes
  • C23C 22/24 (20130101); C25D 11/246 (20130101); C23C 22/50 (20130101); C23C 22/48 (20130101)

International Patent Classification codes
  • C23C 22/24 (20060101); C25D 11/18 (20060101); C25D 11/24 (20060101); C23C 22/48 (20060101); C23C 22/50 (20060101); C23C 22/05 (20060101); C23C 022/05 (); C09D 005/08 (); C23F 011/00 ()

Language
  • eng

Date Issued
  • 2001-02-06

Publisher
  • United States Patent and Trademark Office

Assignee
  • University of Notre Dame Du Lac

Record Visibility Public
Content License
Departments and Units
Member of

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Collections Featuring this Patent
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